added fold-map and foldr-map to (owl list), since they seem to be needed quite often
added fold-map and foldr-map to (owl list), since they seem to be needed quite often

yuriy-chumak/OL,yuriy-chumak/OL,aisamanra/owl-lisp,yuriy-chumak/OL,aoh/owl-lisp,aisamanra/owl-lisp,aoh/owl-lisp,yuriy-chumak/OL,yuriy-chumak/OL,yuriy-chumak/OL,aisamanra/owl-lisp,aoh/owl-lisp